CVE-2018-12882 : Vulnerability Insights and Analysis
Learn about CVE-2018-12882 affecting PHP versions 7.2.x through 7.2.7. Exploiting the use-after-free error in exif_read_from_file can lead to arbitrary code execution. Find mitigation steps here.
CVE-2018-12882 was published on June 26, 2018, and affects PHP versions 7.2.x through 7.2.7. The vulnerability lies in the exif_read_from_impl function, allowing attackers to exploit a use-after-free error in the exif_read_from_file function.
Understanding CVE-2018-12882
This CVE entry highlights a vulnerability in PHP versions 7.2.x through 7.2.7 that can be exploited to cause a use-after-free error.
What is CVE-2018-12882?
The vulnerability stems from the improper closure of a stream not under the function's responsibility, leading to a use-after-free error in the exif_read_from_file function.
The Impact of CVE-2018-12882
Exploitation of this vulnerability can result in a use-after-free error, potentially allowing attackers to execute arbitrary code or crash the application.
Technical Details of CVE-2018-12882
This section delves into the technical aspects of the CVE.
Vulnerability Description
The vulnerability in exif_read_from_impl in PHP versions 7.2.x through 7.2.7 allows attackers to trigger a use-after-free error in the exif_read_from_file function by improperly closing a stream.
Affected Systems and Versions
- PHP versions 7.2.x through 7.2.7
Exploitation Mechanism
The issue can be triggered through the PHP exif_read_data function.
Mitigation and Prevention
Protecting systems from CVE-2018-12882 is crucial to maintaining security.
Immediate Steps to Take
- Apply patches provided by PHP to address the vulnerability
- Monitor PHP security advisories for updates
Long-Term Security Practices
- Regularly update PHP to the latest secure versions
- Implement secure coding practices to mitigate similar vulnerabilities
Patching and Updates
- Stay informed about PHP security updates and apply patches promptly to prevent exploitation.